1/* 2 * linux/sound/oss/soundcard.c 3 * 4 * Sound card driver for Linux 5 * 6 * 7 * Copyright (C) by Hannu Savolainen 1993-1997 8 * 9 * OSS/Free for Linux is distributed under the GNU GENERAL PUBLIC LICENSE (GPL) 10 * Version 2 (June 1991). See the "COPYING" file distributed with this software 11 * for more info. 12 * 13 * 14 * Thomas Sailer : ioctl code reworked (vmalloc/vfree removed) 15 * integrated sound_switch.c 16 * Stefan Reinauer : integrated /proc/sound (equals to /dev/sndstat, 17 * which should disappear in the near future) 18 * Eric Dumas : devfs support (22-Jan-98) <dumas@linux.eu.org> with 19 * fixups by C. Scott Ananian <cananian@alumni.princeton.edu> 20 * Richard Gooch : moved common (non OSS-specific) devices to sound_core.c 21 * Rob Riggs : Added persistent DMA buffers support (1998/10/17) 22 * Christoph Hellwig : Some cleanup work (2000/03/01) 23 */ 24 25 26#include "sound_config.h" 27#include <linux/init.h> 28#include <linux/types.h> 29#include <linux/errno.h> 30#include <linux/signal.h> 31#include <linux/fcntl.h> 32#include <linux/ctype.h> 33#include <linux/stddef.h> 34#include <linux/kmod.h> 35#include <linux/kernel.h> 36#include <asm/dma.h> 37#include <asm/io.h> 38#include <linux/wait.h> 39#include <linux/ioport.h> 40#include <linux/major.h> 41#include <linux/delay.h> 42#include <linux/proc_fs.h> 43#include <linux/smp_lock.h> 44#include <linux/module.h> 45#include <linux/mm.h> 46#include <linux/device.h> 47 48/* 49 * This ought to be moved into include/asm/dma.h 50 */ 51#ifndef valid_dma 52#define valid_dma(n) ((n) >= 0 && (n) < MAX_DMA_CHANNELS && (n) != 4) 53#endif 54 55/* 56 * Table for permanently allocated memory (used when unloading the module) 57 */ 58void * sound_mem_blocks[MAX_MEM_BLOCKS]; 59int sound_nblocks = 0; 60 61/* Persistent DMA buffers */ 62#ifdef CONFIG_SOUND_DMAP 63int sound_dmap_flag = 1; 64#else 65int sound_dmap_flag = 0; 66#endif 67 68static char dma_alloc_map[MAX_DMA_CHANNELS]; 69 70#define DMA_MAP_UNAVAIL 0 71#define DMA_MAP_FREE 1 72#define DMA_MAP_BUSY 2 73 74 75unsigned long seq_time = 0; /* Time for /dev/sequencer */ 76extern struct class *sound_class; 77 78/* 79 * Table for configurable mixer volume handling 80 */ 81static mixer_vol_table mixer_vols[MAX_MIXER_DEV]; 82static int num_mixer_volumes; 83 84int *load_mixer_volumes(char *name, int *levels, int present) 85{ 86 int i, n; 87 88 for (i = 0; i < num_mixer_volumes; i++) { 89 if (strncmp(name, mixer_vols[i].name, 32) == 0) { 90 if (present) 91 mixer_vols[i].num = i; 92 return mixer_vols[i].levels; 93 } 94 } 95 if (num_mixer_volumes >= MAX_MIXER_DEV) { 96 printk(KERN_ERR "Sound: Too many mixers (%s)\n", name); 97 return levels; 98 } 99 n = num_mixer_volumes++; 100 101 strncpy(mixer_vols[n].name, name, 32); 102 103 if (present) 104 mixer_vols[n].num = n; 105 else 106 mixer_vols[n].num = -1; 107 108 for (i = 0; i < 32; i++) 109 mixer_vols[n].levels[i] = levels[i]; 110 return mixer_vols[n].levels; 111} 112EXPORT_SYMBOL(load_mixer_volumes); 113 114static int set_mixer_levels(void __user * arg) 115{ 116 /* mixer_vol_table is 174 bytes, so IMHO no reason to not allocate it on the stack */ 117 mixer_vol_table buf; 118 119 if (__copy_from_user(&buf, arg, sizeof(buf))) 120 return -EFAULT; 121 load_mixer_volumes(buf.name, buf.levels, 0); 122 if (__copy_to_user(arg, &buf, sizeof(buf))) 123 return -EFAULT; 124 return 0; 125} 126 127static int get_mixer_levels(void __user * arg) 128{ 129 int n; 130 131 if (__get_user(n, (int __user *)(&(((mixer_vol_table __user *)arg)->num)))) 132 return -EFAULT; 133 if (n < 0 || n >= num_mixer_volumes) 134 return -EINVAL; 135 if (__copy_to_user(arg, &mixer_vols[n], sizeof(mixer_vol_table))) 136 return -EFAULT; 137 return 0; 138} 139 140/* 4K page size but our output routines use some slack for overruns */ 141#define PROC_BLOCK_SIZE (3*1024) 142 143static ssize_t sound_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) 144{ 145 int dev = iminor(file->f_path.dentry->d_inode); 146 int ret = -EINVAL; 147 148 /* 149 * The OSS drivers aren't remotely happy without this locking, 150 * and unless someone fixes them when they are about to bite the 151 * big one anyway, we might as well bandage here.. 152 */ 153 154 lock_kernel(); 155 156 DEB(printk("sound_read(dev=%d, count=%d)\n", dev, count)); 157 switch (dev & 0x0f) { 158 case SND_DEV_DSP: 159 case SND_DEV_DSP16: 160 case SND_DEV_AUDIO: 161 ret = audio_read(dev, file, buf, count); 162 break; 163 164 case SND_DEV_SEQ: 165 case SND_DEV_SEQ2: 166 ret = sequencer_read(dev, file, buf, count); 167 break; 168 169 case SND_DEV_MIDIN: 170 ret = MIDIbuf_read(dev, file, buf, count); 171 } 172 unlock_kernel(); 173 return ret; 174} 175 176static ssize_t sound_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) 177{ 178 int dev = iminor(file->f_path.dentry->d_inode); 179 int ret = -EINVAL; 180 181 lock_kernel(); 182 DEB(printk("sound_write(dev=%d, count=%d)\n", dev, count)); 183 switch (dev & 0x0f) { 184 case SND_DEV_SEQ: 185 case SND_DEV_SEQ2: 186 ret = sequencer_write(dev, file, buf, count); 187 break; 188 189 case SND_DEV_DSP: 190 case SND_DEV_DSP16: 191 case SND_DEV_AUDIO: 192 ret = audio_write(dev, file, buf, count); 193 break; 194 195 case SND_DEV_MIDIN: 196 ret = MIDIbuf_write(dev, file, buf, count); 197 break; 198 } 199 unlock_kernel(); 200 return ret; 201} 202 203static int sound_open(struct inode *inode, struct file *file) 204{ 205 int dev = iminor(inode); 206 int retval; 207 208 DEB(printk("sound_open(dev=%d)\n", dev)); 209 if ((dev >= SND_NDEVS) || (dev < 0)) { 210 printk(KERN_ERR "Invalid minor device %d\n", dev); 211 return -ENXIO; 212 } 213 lock_kernel(); 214 switch (dev & 0x0f) { 215 case SND_DEV_CTL: 216 dev >>= 4; 217 if (dev >= 0 && dev < MAX_MIXER_DEV && mixer_devs[dev] == NULL) { 218 request_module("mixer%d", dev); 219 } 220 retval = -ENXIO; 221 if (dev && (dev >= num_mixers || mixer_devs[dev] == NULL)) 222 break; 223 224 if (!try_module_get(mixer_devs[dev]->owner)) 225 break; 226 227 retval = 0; 228 break; 229 230 case SND_DEV_SEQ: 231 case SND_DEV_SEQ2: 232 retval = sequencer_open(dev, file); 233 break; 234 235 case SND_DEV_MIDIN: 236 retval = MIDIbuf_open(dev, file); 237 break; 238 239 case SND_DEV_DSP: 240 case SND_DEV_DSP16: 241 case SND_DEV_AUDIO: 242 retval = audio_open(dev, file); 243 break; 244 245 default: 246 printk(KERN_ERR "Invalid minor device %d\n", dev); 247 retval = -ENXIO; 248 } 249 250 unlock_kernel(); 251 return 0; 252} 253 254static int sound_release(struct inode *inode, struct file *file) 255{ 256 int dev = iminor(inode); 257 258 lock_kernel(); 259 DEB(printk("sound_release(dev=%d)\n", dev)); 260 switch (dev & 0x0f) { 261 case SND_DEV_CTL: 262 module_put(mixer_devs[dev >> 4]->owner); 263 break; 264 265 case SND_DEV_SEQ: 266 case SND_DEV_SEQ2: 267 sequencer_release(dev, file); 268 break; 269 270 case SND_DEV_MIDIN: 271 MIDIbuf_release(dev, file); 272 break; 273 274 case SND_DEV_DSP: 275 case SND_DEV_DSP16: 276 case SND_DEV_AUDIO: 277 audio_release(dev, file); 278 break; 279 280 default: 281 printk(KERN_ERR "Sound error: Releasing unknown device 0x%02x\n", dev); 282 } 283 unlock_kernel(); 284 285 return 0; 286} 287 288static int get_mixer_info(int dev, void __user *arg) 289{ 290 mixer_info info; 291 memset(&info, 0, sizeof(info)); 292 strlcpy(info.id, mixer_devs[dev]->id, sizeof(info.id)); 293 strlcpy(info.name, mixer_devs[dev]->name, sizeof(info.name)); 294 info.modify_counter = mixer_devs[dev]->modify_counter; 295 if (__copy_to_user(arg, &info, sizeof(info))) 296 return -EFAULT; 297 return 0; 298} 299 300static int get_old_mixer_info(int dev, void __user *arg) 301{ 302 _old_mixer_info info; 303 memset(&info, 0, sizeof(info)); 304 strlcpy(info.id, mixer_devs[dev]->id, sizeof(info.id)); 305 strlcpy(info.name, mixer_devs[dev]->name, sizeof(info.name)); 306 if (copy_to_user(arg, &info, sizeof(info))) 307 return -EFAULT; 308 return 0; 309} 310 311static int sound_mixer_ioctl(int mixdev, unsigned int cmd, void __user *arg) 312{ 313 if (mixdev < 0 || mixdev >= MAX_MIXER_DEV) 314 return -ENXIO; 315 /* Try to load the mixer... */ 316 if (mixer_devs[mixdev] == NULL) { 317 request_module("mixer%d", mixdev); 318 } 319 if (mixdev >= num_mixers || !mixer_devs[mixdev]) 320 return -ENXIO; 321 if (cmd == SOUND_MIXER_INFO) 322 return get_mixer_info(mixdev, arg); 323 if (cmd == SOUND_OLD_MIXER_INFO) 324 return get_old_mixer_info(mixdev, arg); 325 if (_SIOC_DIR(cmd) & _SIOC_WRITE) 326 mixer_devs[mixdev]->modify_counter++; 327 if (!mixer_devs[mixdev]->ioctl) 328 return -EINVAL; 329 return mixer_devs[mixdev]->ioctl(mixdev, cmd, arg); 330} 331 332static long sound_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 333{ 334 int len = 0, dtype; 335 int dev = iminor(file->f_dentry->d_inode); 336 long ret = -EINVAL; 337 void __user *p = (void __user *)arg; 338 339 if (_SIOC_DIR(cmd) != _SIOC_NONE && _SIOC_DIR(cmd) != 0) { 340 /* 341 * Have to validate the address given by the process. 342 */ 343 len = _SIOC_SIZE(cmd); 344 if (len < 1 || len > 65536 || !p) 345 return -EFAULT; 346 if (_SIOC_DIR(cmd) & _SIOC_WRITE) 347 if (!access_ok(VERIFY_READ, p, len)) 348 return -EFAULT; 349 if (_SIOC_DIR(cmd) & _SIOC_READ) 350 if (!access_ok(VERIFY_WRITE, p, len)) 351 return -EFAULT; 352 } 353 DEB(printk("sound_ioctl(dev=%d, cmd=0x%x, arg=0x%x)\n", dev, cmd, arg)); 354 if (cmd == OSS_GETVERSION) 355 return __put_user(SOUND_VERSION, (int __user *)p); 356 357 lock_kernel(); 358 if (_IOC_TYPE(cmd) == 'M' && num_mixers > 0 && /* Mixer ioctl */ 359 (dev & 0x0f) != SND_DEV_CTL) { 360 dtype = dev & 0x0f; 361 switch (dtype) { 362 case SND_DEV_DSP: 363 case SND_DEV_DSP16: 364 case SND_DEV_AUDIO: 365 ret = sound_mixer_ioctl(audio_devs[dev >> 4]->mixer_dev, 366 cmd, p); 367 break; 368 default: 369 ret = sound_mixer_ioctl(dev >> 4, cmd, p); 370 break; 371 } 372 unlock_kernel(); 373 return ret; 374 } 375 376 switch (dev & 0x0f) { 377 case SND_DEV_CTL: 378 if (cmd == SOUND_MIXER_GETLEVELS) 379 ret = get_mixer_levels(p); 380 else if (cmd == SOUND_MIXER_SETLEVELS) 381 ret = set_mixer_levels(p); 382 else 383 ret = sound_mixer_ioctl(dev >> 4, cmd, p); 384 break; 385 386 case SND_DEV_SEQ: 387 case SND_DEV_SEQ2: 388 ret = sequencer_ioctl(dev, file, cmd, p); 389 break; 390 391 case SND_DEV_DSP: 392 case SND_DEV_DSP16: 393 case SND_DEV_AUDIO: 394 ret = audio_ioctl(dev, file, cmd, p); 395 break; 396 397 case SND_DEV_MIDIN: 398 ret = MIDIbuf_ioctl(dev, file, cmd, p); 399 break; 400 401 } 402 unlock_kernel(); 403 return ret; 404} 405 406static unsigned int sound_poll(struct file *file, poll_table * wait) 407{ 408 struct inode *inode = file->f_path.dentry->d_inode; 409 int dev = iminor(inode); 410 411 DEB(printk("sound_poll(dev=%d)\n", dev)); 412 switch (dev & 0x0f) { 413 case SND_DEV_SEQ: 414 case SND_DEV_SEQ2: 415 return sequencer_poll(dev, file, wait); 416 417 case SND_DEV_MIDIN: 418 return MIDIbuf_poll(dev, file, wait); 419 420 case SND_DEV_DSP: 421 case SND_DEV_DSP16: 422 case SND_DEV_AUDIO: 423 return DMAbuf_poll(file, dev >> 4, wait); 424 } 425 return 0; 426} 427 428static int sound_mmap(struct file *file, struct vm_area_struct *vma) 429{ 430 int dev_class; 431 unsigned long size; 432 struct dma_buffparms *dmap = NULL; 433 int dev = iminor(file->f_path.dentry->d_inode); 434 435 dev_class = dev & 0x0f; 436 dev >>= 4; 437 438 if (dev_class != SND_DEV_DSP && dev_class != SND_DEV_DSP16 && dev_class != SND_DEV_AUDIO) { 439 printk(KERN_ERR "Sound: mmap() not supported for other than audio devices\n"); 440 return -EINVAL; 441 } 442 lock_kernel(); 443 if (vma->vm_flags & VM_WRITE) /* Map write and read/write to the output buf */ 444 dmap = audio_devs[dev]->dmap_out; 445 else if (vma->vm_flags & VM_READ) 446 dmap = audio_devs[dev]->dmap_in; 447 else { 448 printk(KERN_ERR "Sound: Undefined mmap() access\n"); 449 unlock_kernel(); 450 return -EINVAL; 451 } 452 453 if (dmap == NULL) { 454 printk(KERN_ERR "Sound: mmap() error. dmap == NULL\n"); 455 unlock_kernel(); 456 return -EIO; 457 } 458 if (dmap->raw_buf == NULL) { 459 printk(KERN_ERR "Sound: mmap() called when raw_buf == NULL\n"); 460 unlock_kernel(); 461 return -EIO; 462 } 463 if (dmap->mapping_flags) { 464 printk(KERN_ERR "Sound: mmap() called twice for the same DMA buffer\n"); 465 unlock_kernel(); 466 return -EIO; 467 } 468 if (vma->vm_pgoff != 0) { 469 printk(KERN_ERR "Sound: mmap() offset must be 0.\n"); 470 unlock_kernel(); 471 return -EINVAL; 472 } 473 size = vma->vm_end - vma->vm_start; 474 475 if (size != dmap->bytes_in_use) { 476 printk(KERN_WARNING "Sound: mmap() size = %ld. Should be %d\n", size, dmap->bytes_in_use); 477 } 478 if (remap_pfn_range(vma, vma->vm_start, 479 virt_to_phys(dmap->raw_buf) >> PAGE_SHIFT, 480 vma->vm_end - vma->vm_start, vma->vm_page_prot)) { 481 unlock_kernel(); 482 return -EAGAIN; 483 } 484 485 dmap->mapping_flags |= DMA_MAP_MAPPED; 486 487 if( audio_devs[dev]->d->mmap) 488 audio_devs[dev]->d->mmap(dev); 489 490 memset(dmap->raw_buf, 491 dmap->neutral_byte, 492 dmap->bytes_in_use); 493 unlock_kernel(); 494 return 0; 495} 496 497const struct file_operations oss_sound_fops = { 498 .owner = THIS_MODULE, 499 .llseek = no_llseek, 500 .read = sound_read, 501 .write = sound_write, 502 .poll = sound_poll, 503 .unlocked_ioctl = sound_ioctl, 504 .mmap = sound_mmap, 505 .open = sound_open, 506 .release = sound_release, 507}; 508 509/* 510 * Create the required special subdevices 511 */ 512 513static int create_special_devices(void) 514{ 515 int seq1,seq2; 516 seq1=register_sound_special(&oss_sound_fops, 1); 517 if(seq1==-1) 518 goto bad; 519 seq2=register_sound_special(&oss_sound_fops, 8); 520 if(seq2!=-1) 521 return 0; 522 unregister_sound_special(1); 523bad: 524 return -1; 525} 526 527 528/* These device names follow the official Linux device list, 529 * Documentation/devices.txt. Let us know if there are other 530 * common names we should support for compatibility. 531 * Only those devices not created by the generic code in sound_core.c are 532 * registered here. 533 */ 534static const struct { 535 unsigned short minor; 536 char *name; 537 umode_t mode; 538 int *num; 539} dev_list[] = { /* list of minor devices */ 540/* seems to be some confusion here -- this device is not in the device list */ 541 {SND_DEV_DSP16, "dspW", S_IWUGO | S_IRUSR | S_IRGRP, 542 &num_audiodevs}, 543 {SND_DEV_AUDIO, "audio", S_IWUGO | S_IRUSR | S_IRGRP, 544 &num_audiodevs}, 545}; 546 547static int dmabuf; 548static int dmabug; 549 550module_param(dmabuf, int, 0444); 551module_param(dmabug, int, 0444); 552 553static int __init oss_init(void) 554{ 555 int err; 556 int i, j; 557 558#ifdef CONFIG_PCI 559 if(dmabug) 560 isa_dma_bridge_buggy = dmabug; 561#endif 562 563 err = create_special_devices(); 564 if (err) { 565 printk(KERN_ERR "sound: driver already loaded/included in kernel\n"); 566 return err; 567 } 568 569 /* Protecting the innocent */ 570 sound_dmap_flag = (dmabuf > 0 ? 1 : 0); 571 572 for (i = 0; i < ARRAY_SIZE(dev_list); i++) { 573 device_create(sound_class, NULL, 574 MKDEV(SOUND_MAJOR, dev_list[i].minor), NULL, 575 "%s", dev_list[i].name); 576 577 if (!dev_list[i].num) 578 continue; 579 580 for (j = 1; j < *dev_list[i].num; j++) 581 device_create(sound_class, NULL, 582 MKDEV(SOUND_MAJOR, 583 dev_list[i].minor + (j*0x10)), 584 NULL, "%s%d", dev_list[i].name, j); 585 } 586 587 if (sound_nblocks >= MAX_MEM_BLOCKS - 1) 588 printk(KERN_ERR "Sound warning: Deallocation table was too small.\n"); 589 590 return 0; 591} 592 593static void __exit oss_cleanup(void) 594{ 595 int i, j; 596 597 for (i = 0; i < ARRAY_SIZE(dev_list); i++) { 598 device_destroy(sound_class, MKDEV(SOUND_MAJOR, dev_list[i].minor)); 599 if (!dev_list[i].num) 600 continue; 601 for (j = 1; j < *dev_list[i].num; j++) 602 device_destroy(sound_class, MKDEV(SOUND_MAJOR, dev_list[i].minor + (j*0x10))); 603 } 604 605 unregister_sound_special(1); 606 unregister_sound_special(8); 607 608 sound_stop_timer(); 609 610 sequencer_unload(); 611 612 for (i = 0; i < MAX_DMA_CHANNELS; i++) 613 if (dma_alloc_map[i] != DMA_MAP_UNAVAIL) { 614 printk(KERN_ERR "Sound: Hmm, DMA%d was left allocated - fixed\n", i); 615 sound_free_dma(i); 616 } 617 618 for (i = 0; i < sound_nblocks; i++) 619 vfree(sound_mem_blocks[i]); 620 621} 622 623module_init(oss_init); 624module_exit(oss_cleanup); 625MODULE_LICENSE("GPL"); 626MODULE_DESCRIPTION("OSS Sound subsystem"); 627MODULE_AUTHOR("Hannu Savolainen, et al."); 628 629 630int sound_alloc_dma(int chn, char *deviceID) 631{ 632 int err; 633 634 if ((err = request_dma(chn, deviceID)) != 0) 635 return err; 636 637 dma_alloc_map[chn] = DMA_MAP_FREE; 638 639 return 0; 640} 641EXPORT_SYMBOL(sound_alloc_dma); 642 643int sound_open_dma(int chn, char *deviceID) 644{ 645 if (!valid_dma(chn)) { 646 printk(KERN_ERR "sound_open_dma: Invalid DMA channel %d\n", chn); 647 return 1; 648 } 649 650 if (dma_alloc_map[chn] != DMA_MAP_FREE) { 651 printk("sound_open_dma: DMA channel %d busy or not allocated (%d)\n", chn, dma_alloc_map[chn]); 652 return 1; 653 } 654 dma_alloc_map[chn] = DMA_MAP_BUSY; 655 return 0; 656} 657EXPORT_SYMBOL(sound_open_dma); 658 659void sound_free_dma(int chn) 660{ 661 if (dma_alloc_map[chn] == DMA_MAP_UNAVAIL) { 662 /* printk( "sound_free_dma: Bad access to DMA channel %d\n", chn); */ 663 return; 664 } 665 free_dma(chn); 666 dma_alloc_map[chn] = DMA_MAP_UNAVAIL; 667} 668EXPORT_SYMBOL(sound_free_dma); 669 670void sound_close_dma(int chn) 671{ 672 if (dma_alloc_map[chn] != DMA_MAP_BUSY) { 673 printk(KERN_ERR "sound_close_dma: Bad access to DMA channel %d\n", chn); 674 return; 675 } 676 dma_alloc_map[chn] = DMA_MAP_FREE; 677} 678EXPORT_SYMBOL(sound_close_dma); 679 680static void do_sequencer_timer(unsigned long dummy) 681{ 682 sequencer_timer(0); 683} 684 685 686static DEFINE_TIMER(seq_timer, do_sequencer_timer, 0, 0); 687 688void request_sound_timer(int count) 689{ 690 extern unsigned long seq_time; 691 692 if (count < 0) { 693 seq_timer.expires = (-count) + jiffies; 694 add_timer(&seq_timer); 695 return; 696 } 697 count += seq_time; 698 699 count -= jiffies; 700 701 if (count < 1) 702 count = 1; 703 704 seq_timer.expires = (count) + jiffies; 705 add_timer(&seq_timer); 706} 707 708void sound_stop_timer(void) 709{ 710 del_timer(&seq_timer); 711} 712 713void conf_printf(char *name, struct address_info *hw_config) 714{ 715#ifndef CONFIG_SOUND_TRACEINIT 716 return; 717#else 718 printk("<%s> at 0x%03x", name, hw_config->io_base); 719 720 if (hw_config->irq) 721 printk(" irq %d", (hw_config->irq > 0) ? hw_config->irq : -hw_config->irq); 722 723 if (hw_config->dma != -1 || hw_config->dma2 != -1) 724 { 725 printk(" dma %d", hw_config->dma); 726 if (hw_config->dma2 != -1) 727 printk(",%d", hw_config->dma2); 728 } 729 printk("\n"); 730#endif 731} 732EXPORT_SYMBOL(conf_printf); 733 734void conf_printf2(char *name, int base, int irq, int dma, int dma2) 735{ 736#ifndef CONFIG_SOUND_TRACEINIT 737 return; 738#else 739 printk("<%s> at 0x%03x", name, base); 740 741 if (irq) 742 printk(" irq %d", (irq > 0) ? irq : -irq); 743 744 if (dma != -1 || dma2 != -1) 745 { 746 printk(" dma %d", dma); 747 if (dma2 != -1) 748 printk(",%d", dma2); 749 } 750 printk("\n"); 751#endif 752} 753EXPORT_SYMBOL(conf_printf2); 754